51124005 has 12 divisors (see below), whose sum is σ = 88615020. Its totient is φ = 27266112.

The previous prime is 51124001. The next prime is 51124037. The reversal of 51124005 is 50042115.

It can be written as a sum of positive squares in 2 ways, for example, as 11168964 + 39955041 = 3342^2 + 6321^2 .

It is not a de Polignac number, because 51124005 - 2² = 51124001 is a prime.

It is a super-2 number, since 2×51124005² = 5227327774480050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51124001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 568000 + ... + 568089.

It is an arithmetic number, because the mean of its divisors is an integer number (7384585).

Almost surely, 2^51124005 is an apocalyptic number.

It is an amenable number.

51124005 is a deficient number, since it is larger than the sum of its proper divisors (37491015).

51124005 is a wasteful number, since it uses less digits than its factorization.

51124005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136100 (or 1136097 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 51124005 is about 7150.1052439807. The cubic root of 51124005 is about 371.1432982476.

The spelling of 51124005 in words is "fifty-one million, one hundred twenty-four thousand, five".